I have 3 numbers with ID Mobile.
2 numbers paid £35 for 20GB data for 10 days for Turkey.
One number is fine.
Another number no data when leave hotel, can't WhatsApp, internet, no bank, nothing.
iPhone, she's turned on data roaming, all works in WiFi.
ID Mobile instructions are incorrect:
Open the iD Mobile app or log-in to My Account Online.
Tap ‘Plan’.
Scroll down.
Tap ‘Manage your iD services’.
Enable the ‘Roaming’ & ‘International’ toggles.
There is nothing that says Manage your ID services.